Water tap



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C. A. HELLDOV-ET AL WATER TAP' Filed Jan.- :1,1 1924T Patented @et lll, i924.

CARL ALBERT HELLIDOV AND GEORG AXEL GABRIEL LFSTRM, OF MALMO, SWEDEN.

WATER TA1?.

Application filed January 31, 1924. Serial No. 689,664.

To all wom t may concern.'

Be it known that we. CARL ALBERT HELLDov and Grone AXEL GABRIEL LrsfrRM, both citizens ot' Sweden,r and residing at Malmo7 Sweden, have invented a certain new and useful Water Tap, of which the following is a specification.

As is well known the tightening washer in the usual water tap is worn `considerably by the daily use of the tap, and therefore the washer requires to be renewed after a relatively short time. In order to replace this washer without turning off the water at the main tap, it has been j nroposed to provide in addition to the usual valve tor opening and closing the tap a secondary valve acting in the opposite way to the former and arranged on the opposite sido of the seating for the former valve, said secqndary valve automatically closing the through-passage in the tap, when the firstnamed valve is removed acertain distance from its seating. The devices hitherto proposed do not however solve the problem in a satisfactory manner, andv for instance in one of the proposed constructions the drawbacks arise that the valve spindle is acted upon by the water pressure in such disadvantageous manner that the spindle is subjected to great strains. In another heretofore proposed construction the water supply is cut off much too suddenly, so that the water pipes are subjected to such great strains that the adaptation of this device is connected with the risk of damaging the water pipes. Moreover this last named con.- struction is much too complicated and expensive. In still another proposed construe tion the second tightening member consists of a ball or the like, whereby the disadvantages arise that the ball vibrates in thel piping, thereby producing` troublesome noise, and that the usual tightening member including the hand wheel must be substituted by a screw sleeve which d oes not secure et fective tightening.

The present invention has for its object to eliminate these drawbacks attached to the older constructions. For this purpose the usual closing device comprising the spindle and the hand wheel has been retained, the secondary valve is well guided and is acted upon by the water pressure in exactly axial direction, so that it cannot become jammed, and the usual tightening valve can be retained. in its usual 'form but it can of course be made to close the tap opening automatically in a known manner without departing fromv theiinvention.

In the accompanying drawing the invention has by way of an example been illustrated as applied to a horizontal type of water tap;

Figure 1 being a vertical. section and `li`igures 2 and 3 being views of the secondary valve seen from one end and one side respectively.

Referring to the drawing l is the water tap body, 2 the outlet, 3 the ordinary main valve, l the screw spindle of the latter and 5 the secondary valve. According to the invention the main valve 3 and the secondary valve 5 are arranged to tighen on seatings formed by the eXtreme annular end surfaces of a cylindrical part 7 of the water tap body l, said cylindrical part serving as a guide c for the wings 6 arranged on the secondary valve 5. This arrangement ensures that the secondary valve 5 is disposed immediately behind the main valve 3 so that it requires the least possible space and at the same time is provided with `the best possible guiding means. The secondary valve is inserted in its place through the connecting piece 8 arranged in line with the cylindrical part 7. A stop ring 9 or the like may after insertion of the secondary valve be screwed in into the connecting piece 8 so as to prevent the secondary valve :trom` falling out1 As will be seen from the drawing, substantially the usual form of water tap can be retained in spite of the addition of the secondary valve, and the price of the improved water tap will not be augmented essentially. The construction is extraordinarily simple, as one eXtra part only has been added, namely the secondary valve which in itself is of the simplest and therefore most reliable construction. The secondary valve is acted upon by the water pressure in exactly axial direction so that it cannot become jammed. The secondary valve normally abuts agalnst the closed main valve 3 and will automatically be closed when the main valve is sufficiently withdrawn Jfrom its seating. It is however to be observed that this action per se is not new, but that the novelty of the invention is based upon the formation of the water tap body with a cylindrical guide for guiding the secondary valve, said valve be-` ing provided vwith guiding wings and ar ranged immediately behind the seating for closed by vthepresent invention is not intendv ed'or obtained; and according to the present the ordinary valve.' "They seatings for the inaini'yalye andthe. secondary valve have also" previouslyfalready been arranged at the l,extreme endsot ya shortcylindrical through-` passage or bore-'in the` Vwater, tap body, but with suchy van" arrangement, which presupposesaguide of another nature for the secondary Valve and also a moditiedconstruc'- tion of thcstap body, the same siinplearrangement ot thesecondary valve as disinvention the indicated cylindrical partfoic 'thetap bodyi's adapted to forrnjthe guide for the secondary valve and obviously .there tore must have av length and a diameter in correspondence with the said purpose, which r,conditions are lacking in the older constructions. l

What

.we yclaim and desire' tosecure by n Letters Patent is lIn a. Water tap, the combination of a body V.or casingl provided at one end with. aninternally-threaded connecting portion constitntinga water inlet, and at itsr other end with `a hollow plug having an internallythreaded part; Ia laterally-projecting"dischargespout adjacent the plug; said body also comprising a cylindrical, vcentral portion v which forms an integral part'tllleof and the extreme, opposite end v'surfaces of ,which constitute annular valve seats disl posed interiorly of ,the body; the connecting portion ot said body, the two valve seats and the "bore of the plug bei-ng disposed in oo axial relation; a main valve to engage the front Valve seat; an operating spindle eX- tending through said plugbore'andconlindrical portion of said body which project into and through that portion and' abut against the main valve at their tree ends, whereby/ the secondary Valve will bespaced troni its seat by the main valve when the latter is closed, but will be moved against its seat by the pressure ot the in-colning water as the main valve is moved away from ,the

respective seat by the operation ot said spindle; and a stop ring threaded into said connecting portion to preventy loss of the secondary valve.

In testimony whereof, we havesigned .our names to this specificatlon 1n the presence ot two subscribing witnesses.

CARL ALBERT HELLDOV. crono AXEL GABRIEL LFsTRM. Witnesses THILYS WILKENs, i VERNECARLNY, 

